Null Geiger,F.
Computus ecclesiasticus sive tractatus chronologicus in quo agitu…
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Geiger,F. Computus ecclesiasticus sive tractatus chronologicus in quo agitur de scientia observandi, calculandi aut supputandi solis & lunae motus... Item quomodo paranda & instruenda calendaria usui civili & politico servientia. Mannheim, J. Mayer 1731. 9 folding plates (with woodcut vellum), 1 text copperplate and 10 folding tables. 20 leaves, 383 pp. Central hardcover (edges damaged, worn and rubbed, waterstained). Houzeau/Lanc. 13961. de Backer/S. III, 1304, 5. only edition. - Extremely rare handbook for the calculation of the phases of the moon and sun according to the arithmetical method and on the basis of volvelles and tables. - The mathematician and theologian Friedrich Geiger (1655-1734) taught in Bamberg, among other places. - Waterstained in places, beginning and end somewhat spotty, footbridge with ink stain, plates and tables partly with losses, 2 tables with fold tears, scarcely trimmed. torn through. - Extremely rare manual for the calculation of lunar and solar phases by arithmetic method and based on volvelles and tables. Not in RBH, ABPC and JAP. Only a handful of copies in public libraries.

1497 

Geiger,F. Computus ecclesiasticus sive tractatus chronologicus in quo agitur de scientia observandi, calculandi aut supputandi solis & lunae motus... Item quomodo paranda & instruenda calendaria usui civili & politico servientia. Mannheim, J. Mayer 1731. 9 folding plates (with woodcut vellum), 1 text copperplate and 10 folding tables. 20 leaves, 383 pp. Central hardcover (edges damaged, worn and rubbed, waterstained). Houzeau/Lanc. 13961. de Backer/S. III, 1304, 5. only edition. - Extremely rare handbook for the calculation of the phases of the moon and sun according to the arithmetical method and on the basis of volvelles and tables. - The mathematician and theologian Friedrich Geiger (1655-1734) taught in Bamberg, among other places. - Waterstained in places, beginning and end somewhat spotty, footbridge with ink stain, plates and tables partly with losses, 2 tables with fold tears, scarcely trimmed. torn through. - Extremely rare manual for the calculation of lunar and solar phases by arithmetic method and based on volvelles and tables. Not in RBH, ABPC and JAP. Only a handful of copies in public libraries.

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[Chemistry] [Pharmacy] GEOFFROY (Etienne-François): Tractatus de materia medica, sive de medicamentorum simplicium. Historia, virtute, delectu & usu. Parisiis, Joannis Desaint & Caroli Saillant, 1741, 3 volumes. 12 by 19.5 cm. (4)-197-(3)-318-(6) pages + 1 folding plate; (4)-794-(6) pages and (4)-836 pages. Contemporary full calf, 5-rib spine, ornate bindings, red title-pieces. Minor old and well-executed restorations, very good condition of binding. Paper sometimes slightly foxed. 1) De fossilibus ; 2) De vegetabilibus exoticis ; 3) De vegetabilibus indigenis. First edition. Conlon 41: 497; European Americana 741: 93; Muller, Biblio. des Kaffee 91. "Previously 1st published, London, 1736, as Geoffroy's "A treatise of the fossil vegetable, and animal substances that are made use of in physick", which purports to be based upon a ms. of the author's lectures. American plants include balsam of Peru, cacao, ipecacuanha, Jamaica pepper, Virginian snakeroot, etc." (European Americana). "Etienne-François Geoffroy, a native of Paris, was a master apothecary and doctor of medicine in Paris. Geoffroy proposed a classification of chemical substances according to their greater or lesser "disposition to unite" with a reference substance. The idea that some substances could unite more easily than others was not new, but Geoffroy took credit for bringing together all available information in a large general table, later called the affinity table. The controversy between him and Louis LEMERY, one of his colleagues at the Académie, bears witness to the new way of practicing science, with everyone putting forward a conjecture that they tried to corroborate with experiments, and proposing new experiments to refute the opposing conjecture. This new art of scientific debate was to provide a solid foundation for the emerging science of chemistry.